/Engine/Source/Runtime/NavigationSystem/Public/NavigationSystem.h
void AddDirtyArea ( const FBox & NewArea, int32 Flags, const [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< [UObject](API\Runtime\CoreUObject\UObject\UObject) *()> & ObjectProviderFunc, const [FName](API\Runtime\Core\UObject\FName) & DebugReason )